Journal of Shanghai Jiao Tong University ›› 2023, Vol. 57 ›› Issue (7): 824-834.doi: 10.16183/j.cnki.jsjtu.2022.050

Special Issue: 《上海交通大学学报》2023年“新型电力系统与综合能源”专题

• New Type Power System and the Integrated Energy • Previous Articles     Next Articles

Distributed Prescribed-Time Consensus Based Cooperative Control for DC Microgrids

ZHOU Ruchang, WANG Ziqiang, WANG Jie()   

  1. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2022-03-05 Revised:2022-05-09 Accepted:2022-06-17 Online:2023-07-28 Published:2023-07-28
  • Contact: WANG Jie E-mail:jiewangxh@sjtu.edu.cn

Abstract:

A microgrid control method based on prescribed time control is proposed to solve the cooperative control problem of distributed energy resources (DER) in DC microgrid. First, a current control method based on prescribed time control is proposed, which can allocate the power output of each DER proportionally within a pre-defined time. Meanwhile, the outlet voltage of each distributed power supply can be adjusted to be near the rated value and the observation value can be kept at the rated value. Then, the microgrid system is simulated through MATLAB/Simulink and the effectiveness of the proposed control strategy is verified in different working conditions. Afterward, the finite-time control strategy is established in the simulated system. A comparison of the conservative power quality of the system current with the estimated time of system convergence in the scheduled-time control strategy verifies the advantages of the proposed strategy.

Key words: direct current (DC) microgrids, droop control, distributed control, secondary control, prescribed-time consensus

CLC Number: